mGSTEP is a software development framework designed primarily for use in
embedded devices. It implements the core elements of NeXT's OPENSTEP(tm)
which evolved into Apple's Cocoa(tm)
Objective-C class libraries. The drawing API is a partial implementation of
Display Postscript(tm) in parallel with the newer Core Graphics(tm) API.
The stable GUI (AppKit) is X11 based.
A Linux framebuffer based GUI backend is also included.

The top center and left screenshots below were created with mGSTEP and
WindowMaker running on Linux. The
top right screenshot illustrates anti-aliased vector path drawing on the Linux framebuffer. The two bottom right screenshots show the
tableview example built using the same Makefile and source code running on
mGSTEP/Linux and Cocoa/MacOSX.